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config: rename external-snapshots to snapshot-as-volume-chain

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Not perfect but now it's still easy to rename and the new variant fits
a bit better to the actual design and implementation.

Add best-effort migration for storage.cfg, this has been never
publicly released after all.

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
This commit is contained in:
Thomas Lamprecht
2025-07-17 19:46:13 +02:00
parent 2d44f2eb3e
commit a81ee83127
7 changed files with 36 additions and 22 deletions
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6
src/PVE/Storage/LVMPlugin.pm
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@ -399,7 +399,7 @@ sub options {
base => { fixed => 1, optional => 1 },
tagged_only => { optional => 1 },
bwlimit => { optional => 1 },
'external-snapshots' => { optional => 1 },
'snapshot-as-volume-chain' => { optional => 1 },
};
}
@ -604,9 +604,9 @@ my sub alloc_lvm_image {
die "unsupported format '$fmt'" if $fmt ne 'raw' && $fmt ne 'qcow2';
die "external-snapshots option need to be enabled to use qcow2 format"
die "snapshot-as-volume-chain option need to be enabled to use qcow2 format"
if $fmt eq 'qcow2'
&& !$scfg->{'external-snapshots'};
&& !$scfg->{'snapshot-as-volume-chain'};
$class->parse_volname($name);